Hiwonder TTL / USB Debugging Board

I have previously used the larger "Serial Bus Servo Controller: Hiwonder Serial Bus Servo Controller Communication Tester" with an arduino Nano ESP32 because the standby/communication voltage on that board was 3.3V. THIS IS NOT TRUE FOR THIS BOARD! I wrongly assumed the voltage would be the same but instead this boards standby/communication voltage is 5V and that should be explicitly stated as I connected it to my board and because I fed 5V into a 3.3V only pin, fried it and now the board is useless. Do not make the same mistake I did and make sure to include a level shifter to avoid this happening to you. Hiwokder should really include this information in their description for both products and even better yet, provide a built in level shifter on this board or at least a way to select between 3.3 and 5V communication voltage. I hope someone see's this and double checks so they don't end up having to throw away a brand new board because this information was not provided to customers. I still like this company and its products and I'm disappointed that I lost a $20 board because of it but I also should have checked beforehand. Please due your due diligence and check before hooking anything up like me. Hopefully one day Hiwonder will update either this page with this information or update their product line to include a built in level shifter or a way to choose between 5V and 3.3V communication.

Very Good.

Hiwonder TTL / USB Debugging Board

This made reprogramming and testing my new digital servo very easy. I have a Mac, so I had to write a quick utility to do the job, but it was easy enough.